DD-WRT Issues

My DD-WRT WRT54GL has been acting strange lately. Most of the symptoms appear as missing values on the web interface. The most obvious issue being the port forwarding table not appearing or responding to add/remove commands. More recently, the WAN traffic graph no longer appears.

After probing around, the issue is the router running out of nvram. You can verify this by running:

root@DD-WRT:~# nvram show | grep size
size: 32776 bytes (-8 left)

If you dump the nvram, you can see what is actually stored on the router. Most of the data is filled with years of WAN traffic data. I cleared the WAN traffic data on the web interface (after creating a backup of course) and then restored only the current year's data to free up ~11Kb before rebooting the router.

root@DD-WRT:~# nvram show | grep size
size: 21622 bytes (11146 left)

After that, everything on the web interface appears to be working once again.